AmpRx BrownBox


AmpRx BrownBox is back! The same great product, with new ownership.


  • 120 Volt AC, 60 Hz, 5 Amp Voltage Attenuator supplies up to 540 Watts, designed for mid to larger sized amplifiers (i.e. Fender Deluxe/Bassman/Twin, Marshall 50w/100w, Vox AC30). Can also be used for parallel or dual amp rigs

  • Easy to read back-lit L.C.D. display enables real-time voltage and amperage monitoring – also useful for diagnostics

  • Four attenuation modes (3%, 4%, 6%, and 10%) help to fine-tune your voltage

  • Proprietary transformer design wound exclusively for use with tube amplifiers, an industry first

  • Equal or attenuated voltage output and a 5 amp fuse with in-rush current protection ensures that you will never accidentally overload your amplifier

  • Powder coated EMF neutral housing and tough road rugged construction

  • Silent, cool operation


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